(3a+2b)(2b-3a)(9a^2-4b^2)

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(3a+2b)(2b-3a)(9a^2-4b^2)(3a+2b)(2b-3a)(9a^2-4b^2)(3a+2b)(2b-3a)(9a^2-4b^2)(3a+2b)(2b-3a)(9a²-4

(3a+2b)(2b-3a)(9a^2-4b^2)
(3a+2b)(2b-3a)(9a^2-4b^2)

(3a+2b)(2b-3a)(9a^2-4b^2)
(3a+2b)(2b-3a)(9a²-4b²)
=-(3a+2b)(3a-2b)(9a²-4b²)
=-(9a²-4b²)²
=-(81a⁴-72a²b²+16b⁴)
=-81a⁴+72a²b²-16b⁴ .

(3a+2b)(2b-3a)(9a²-4b²)
=-(3a+2b)(3a-2b)(9a²-4b²)
=-(9a²-4b²)²
=-(81a⁴-72a²b²+16b⁴)
=-81a⁴+72a²b²-16b⁴